Kirchhoff’s laws
10.2What the syllabus asks of you
- recall Kirchhoff’s first law and understand that it is a consequence of conservation of charge
- recall Kirchhoff’s second law and understand that it is a consequence of conservation of energy
- derive, using Kirchhoff’s laws, a formula for the combined resistance of two or more resistors in series
- use the formula for the combined resistance of two or more resistors in series
- derive, using Kirchhoff’s laws, a formula for the combined resistance of two or more resistors in parallel
- use the formula for the combined resistance of two or more resistors in parallel
- use Kirchhoff’s laws to solve simple circuit problems
Read the notes first
Chapter 10: Kirchhoff's laws
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Every question on Kirchhoff’s laws, untimed, marked as you go.
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113 questions
1May / June 2026 · Paper 11 · Q35Show mark scheme →
A
B
C
D
Mark scheme
2May / June 2026 · Paper 12 · Q36Show mark scheme →
Acharge / energy
Benergy / current
Ccurrent / charge
Denergy / charge
Mark scheme
3May / June 2026 · Paper 12 · Q37Show mark scheme →
A125 Ω
B167 Ω
C250 Ω
D500 Ω
Mark scheme
4May / June 2026 · Paper 13 · Q36Show mark scheme →
AX → Z → Y
BY → X → Z
CY → Z → X
DZ → Y → X
Mark scheme
5May / June 2026 · Paper 14 · Q35Show mark scheme →
A20 Ω
B30 Ω
C32 Ω
D36 Ω
Mark scheme
6May / June 2026 · Paper 14 · Q37Show mark scheme →
A0.17 A
B0.25 A
C0.33 A
D1.3 A
Mark scheme
7Oct / Nov 2025 · Paper 11 · Q34Show mark scheme →
A0.40 Ω
B0.80 Ω
C2.0 Ω
D2.8 Ω
Mark scheme
8Oct / Nov 2025 · Paper 11 · Q37Show mark scheme →
AI1 = I2 + I4 + I5
BI2 = I1 – I3
CI2 = I3 + I4 + I5
DI4 = I3 – I5
Mark scheme
9Oct / Nov 2025 · Paper 12 · Q37Show mark scheme →
Afirst law: charge; second law: energy
Bfirst law: charge; second law: voltage
Cfirst law: energy; second law: charge
Dfirst law: voltage; second law: charge
Mark scheme
10Oct / Nov 2025 · Paper 13 · Q34Show mark scheme →
A0.40 Ω
B0.80 Ω
C2.0 Ω
D2.8 Ω
Mark scheme
11Oct / Nov 2025 · Paper 13 · Q37Show mark scheme →
AI1 = I2 + I4 + I5
BI2 = I1 – I3
CI2 = I3 + I4 + I5
DI4 = I3 – I5
Mark scheme
12Oct / Nov 2025 · Paper 14 · Q36Show mark scheme →
A2 V
B4 V
C6 V
D10 V
Mark scheme
13May / June 2025 · Paper 11 · Q34Show mark scheme →
APQ
BQR
CRS
DSP
Mark scheme
14May / June 2025 · Paper 11 · Q36Show mark scheme →
AR1 + R2
B\frac{R_1 R_2}{R_1 + R_2}
C\frac{R_1 + R_2}{R_1 R_2}
D\frac{R_1}{R_2}
Mark scheme
15May / June 2025 · Paper 12 · Q36Show mark scheme →
ACircuit A: terminals 1 and 3 connected via resistors to 2 and 4 respectively, with 2-4 connected by a wire
BCircuit B: terminals 1 and 3 connected via resistors to 2 and 4 respectively, with 1-3 and 2-4 connected by wires
CCircuit C: terminal 1 connected via resistor to 2, 3 connected via resistor to 1, and 2-4 connected by a wire
DCircuit D: terminal 1 connected via resistor to 3, and 2-4 connected by a wire
Mark scheme
16May / June 2025 · Paper 12 · Q37Show mark scheme →
AThe algebraic sum of currents at a junction is zero. / charge
BThe algebraic sum of currents at a junction is zero. / energy
CThe e.m.f. in a loop is equal to the algebraic sum of the product of current and resistance round the loop. / charge
DThe e.m.f. in a loop is equal to the algebraic sum of the product of current and resistance round the loop. / energy
Mark scheme
17May / June 2025 · Paper 14 · Q33Show mark scheme →
ACircuit A
BCircuit B
CCircuit C
DCircuit D
Mark scheme
18May / June 2025 · Paper 14 · Q34Show mark scheme →
AThis is Kirchhoff's first law, which results from the conservation of charge.
BThis is Kirchhoff's first law, which results from the conservation of energy.
CThis is Kirchhoff's second law, which results from the conservation of charge.
DThis is Kirchhoff's second law, which results from the conservation of energy.
Mark scheme
19May / June 2025 · Paper 14 · Q35Show mark scheme →
A12 Ω
B30 Ω
C50 Ω
D60 Ω
Mark scheme
20Oct / Nov 2024 · Paper 11 · Q31Show mark scheme →
AThe charge flowing in an electric circuit is conserved.
BThe energy in an electric circuit is conserved.
CThe sum of the electric currents entering a point in an electric circuit is equal to the sum of the electric currents leaving that point.
DThe sum of the potential differences in an electric circuit is equal to the sum of the products of the current and resistance.
Mark scheme
21Oct / Nov 2024 · Paper 11 · Q36Show mark scheme →
A
B
C
D
Mark scheme
22Oct / Nov 2024 · Paper 12 · Q35Show mark scheme →
ACircuit A: 100 Ω and 100 Ω in parallel, in series with 50 Ω
BCircuit B: 50 Ω and 100 Ω in parallel, in series with 100 Ω
CCircuit C: 100 Ω, 100 Ω and 50 Ω in parallel
DCircuit D: 100 Ω, 100 Ω and 50 Ω in series
Mark scheme
23Oct / Nov 2024 · Paper 12 · Q36Show mark scheme →
Afirst law: charge; second law: energy
Bfirst law: energy; second law: current
Cfirst law: power; second law: charge
Dfirst law: resistance; second law: power
Mark scheme
24May / June 2024 · Paper 11 · Q34Show mark scheme →
A30 Ω
B90 Ω
C160 Ω
D480 Ω
Mark scheme
25May / June 2024 · Paper 11 · Q36Show mark scheme →
ART = R1 + R2 + R3
BRT = 1/(R1 + R2) + 1/R3
C1/RT = 1/(R1 + R2 + R3)
D1/RT = 1/(R1 + R2) + 1/R3
Mark scheme
26May / June 2024 · Paper 12 · Q30Show mark scheme →
Areading on X / A: 4.0, reading on Y / A: 1.3
Breading on X / A: 4.0, reading on Y / A: 2.7
Creading on X / A: 6.0, reading on Y / A: 2.0
Dreading on X / A: 6.0, reading on Y / A: 4.0
Mark scheme
27May / June 2024 · Paper 12 · Q34Show mark scheme →
AIt considers the currents at a junction in a circuit and is a consequence of the conservation of charge.
BIt considers the currents at a junction in a circuit and is a consequence of the conservation of energy.
CIt considers the electromotive forces and potential differences in a circuit loop and is a consequence of the conservation of charge.
DIt considers the electromotive forces and potential differences in a circuit loop and is a consequence of the conservation of energy.
Mark scheme
28May / June 2024 · Paper 12 · Q35Show mark scheme →
AIt is between r and R.
BIt is equal to (r + R).
CIt is greater than (r + R).
DIt is less than r.
Mark scheme
29May / June 2024 · Paper 13 · Q32Show mark scheme →
AA
BB
CC
DD
Mark scheme
30May / June 2024 · Paper 13 · Q34Show mark scheme →
A20 and 40, parallel
B40 and 100, parallel
C20 and 40, series
D40 and 100, series
Mark scheme
31May / June 2024 · Paper 13 · Q36Show mark scheme →
A1.5 Ω
B2.5 Ω
C3.5 Ω
D5.0 Ω
Mark scheme
32Feb / March 2024 · Paper 12 · Q33Show mark scheme →
A0.67 kΩ
B1.6 kΩ
C3.2 kΩ
D8.1 kΩ
Mark scheme
33Oct / Nov 2023 · Paper 11 · Q31Show mark scheme →
A0.50 Ω
B1.0 Ω
C1.5 Ω
D2.3 Ω
Mark scheme
34Oct / Nov 2023 · Paper 11 · Q35Show mark scheme →
Acharge and energy
Bcharge and resistance
Cmass and energy
Dmass and resistance
Mark scheme
35Oct / Nov 2023 · Paper 12 · Q35Show mark scheme →
Acharge
Benergy
Clinear momentum
Dpotential difference
Mark scheme
36Oct / Nov 2023 · Paper 12 · Q36Show mark scheme →
A3.0 Ω
B5.0 Ω
C7.2 Ω
D18 Ω
Mark scheme
37Oct / Nov 2023 · Paper 13 · Q35Show mark scheme →
AI₀ = I₁ = I₂ = I₃
BI₀ = I₁ + I₂ + I₃
CV₀ = V₁ = V₂ = V₃
DV₀ = V₁ + V₂ + V₃
Mark scheme
38Oct / Nov 2023 · Paper 13 · Q36Show mark scheme →
A2.7 Ω
B4.0 Ω
C5.3 Ω
D12 Ω
Mark scheme
39May / June 2023 · Paper 12 · Q35Show mark scheme →
Acharge
Benergy
Cmomentum
Dpotential difference
Mark scheme
40May / June 2023 · Paper 12 · Q36Show mark scheme →
A0
B\frac{E}{3}
C\frac{2E}{3}
DE
Mark scheme
41May / June 2023 · Paper 13 · Q31Show mark scheme →
A0.50 Ω
B2.7 Ω
C4.0 Ω
D6.0 Ω
Mark scheme
42May / June 2023 · Paper 13 · Q35Show mark scheme →
Acharge
Benergy
Cmass
Dmomentum
Mark scheme
43May / June 2023 · Paper 13 · Q36Show mark scheme →
A15 Ω
B17 Ω
C23 Ω
D27 Ω
Mark scheme
44Feb / March 2023 · Paper 12 · Q35Show mark scheme →
Acharge; current
Bcharge; energy
Ccurrent; mass
Denergy; current
Mark scheme
45Oct / Nov 2022 · Paper 11 · Q34Show mark scheme →
Alamp P brighter, lamp R brighter
Blamp P brighter, lamp R dimmer
Clamp P dimmer, lamp R brighter
Dlamp P dimmer, lamp R dimmer
Mark scheme
46Oct / Nov 2022 · Paper 13 · Q35Show mark scheme →
Aenergy; charge
Benergy; momentum
Ccharge; energy
Dmomentum; energy
Mark scheme
47Oct / Nov 2022 · Paper 13 · Q36Show mark scheme →
A1.5 V
B2.1 V
C7.1 V
D12.1 V
Mark scheme
48May / June 2022 · Paper 11 · Q36Show mark scheme →
AIt is a consequence of the conservation of charge.
BIt is a consequence of the conservation of electromotive force.
CIt is a consequence of the conservation of energy.
DIt is a consequence of the conservation of potential difference.
Mark scheme
49May / June 2022 · Paper 12 · Q36Show mark scheme →
Afirst law: charge; second law: energy
Bfirst law: energy; second law: current
Cfirst law: current; second law: charge
Dfirst law: energy; second law: charge
Mark scheme
50May / June 2022 · Paper 13 · Q37Show mark scheme →
AKirchhoff's first law: The sum of the currents entering a junction equals the sum of the currents leaving the junction. physics principle applied for first law: conservation of charge. Kirchhoff's second law: The sum of the e.m.f.s around any closed loop in a circuit equals the sum of the p.d.s around the same loop. physics principle applied for second law: conservation of energy
BKirchhoff's first law: The sum of the currents entering a junction equals the sum of the currents leaving the junction. physics principle applied for first law: conservation of energy. Kirchhoff's second law: The sum of the e.m.f.s around any closed loop in a circuit equals the sum of the p.d.s around the same loop. physics principle applied for second law: conservation of charge
CKirchhoff's first law: The sum of the e.m.f.s around any closed loop in a circuit equals the sum of the p.d.s around the same loop. physics principle applied for first law: conservation of energy. Kirchhoff's second law: The sum of the currents entering a junction equals the sum of the currents leaving the junction. physics principle applied for second law: conservation of charge
DKirchhoff's first law: The sum of the e.m.f.s around any closed loop in a circuit equals the sum of the p.d.s around the same loop. physics principle applied for first law: conservation of charge. Kirchhoff's second law: The sum of the currents entering a junction equals the sum of the currents leaving the junction. physics principle applied for second law: conservation of energy
Mark scheme
51Feb / March 2022 · Paper 12 · Q35Show mark scheme →
Athe algebraic sum of currents into a junction is zero — charge
Bthe algebraic sum of currents into a junction is zero — energy
Cthe e.m.f. in a loop is equal to the algebraic sum of the product of current and resistance round the loop — charge
Dthe e.m.f. in a loop is equal to the algebraic sum of the product of current and resistance round the loop — energy
Mark scheme
52Feb / March 2022 · Paper 12 · Q36Show mark scheme →
A0.50 Ω
B2.0 Ω
C4.0 Ω
D8.0 Ω
Mark scheme
53Oct / Nov 2021 · Paper 12 · Q37Show mark scheme →
Acurrent 0.1 A, e.m.f. 4 V
Bcurrent 0.3 A, e.m.f. 4 V
Ccurrent 0.1 A, e.m.f. 6 V
Dcurrent 0.3 A, e.m.f. 6 V
Mark scheme
54Oct / Nov 2021 · Paper 13 · Q36Show mark scheme →
A4/5
B5/4
C1/2
D2/1
Mark scheme
55Oct / Nov 2021 · Paper 13 · Q37Show mark scheme →
A0.20 A
B0.60 A
C1.0 A
D1.8 A
Mark scheme
56May / June 2021 · Paper 11 · Q36Show mark scheme →
A\frac{R}{6}
B\frac{6R}{11}
C\frac{11R}{6}
D6R
Mark scheme
57May / June 2021 · Paper 12 · Q37Show mark scheme →
AI₁ = I₂ + I₃
BI₁ = I₂ = I₃
CE = V₁ + V₂
DV₁ = V₂ = V₃
Mark scheme
58May / June 2021 · Paper 13 · Q35Show mark scheme →
A2.7 A
B4.0 A
C8.0 A
D13 A
Mark scheme
59May / June 2021 · Paper 13 · Q37Show mark scheme →
A0 = I1(R1 + R2) + I2(R3 + R4)
B0 = I1(R1 + R2) – I2(R3 + R4)
CE = I1(R1 + R2) + I2(R3 + R4)
DE = I1(R1 + R2) – I2(R3 + R4)
Mark scheme
60Feb / March 2021 · Paper 12 · Q33Show mark scheme →
Apower dissipated in R1 = power dissipated in R2 + power dissipated in R3
Bpower dissipated in R2 = power dissipated in R3
Cpower output of cell = power dissipated in R1 + power dissipated in R2 + power dissipated in R3
Dpower output of cell = power dissipated in R1
Mark scheme
61Oct / Nov 2020 · Paper 11 · Q36Show mark scheme →
Abrighter brighter
Bbrighter dimmer
Cdimmer brighter
Ddimmer dimmer
Mark scheme
62Oct / Nov 2020 · Paper 11 · Q37Show mark scheme →
A20 μA
B30 μA
C40 μA
D60 μA
Mark scheme
63Oct / Nov 2020 · Paper 13 · Q37Show mark scheme →
A6.0 V
B15 V
C20 V
D24 V
Mark scheme
64May / June 2020 · Paper 11 · Q37Show mark scheme →
A3.0 Ω
B6.0 Ω
C12 Ω
D18 Ω
Mark scheme
65May / June 2020 · Paper 12 · Q37Show mark scheme →
Afirst law: charge; second law: energy
Bfirst law: charge; second law: momentum
Cfirst law: energy; second law: charge
Dfirst law: energy; second law: momentum
Mark scheme
66May / June 2020 · Paper 13 · Q35Show mark scheme →
A15 V
B29 V
C39 V
D51 V
Mark scheme
67Feb / March 2020 · Paper 12 · Q33Show mark scheme →
A1/3
B4/3
C2/1
D3/1
Mark scheme
68Oct / Nov 2019 · Paper 11 · Q34Show mark scheme →
Acharge / current
Bcharge / energy
Ccurrent / mass
Denergy / current
Mark scheme
69Oct / Nov 2019 · Paper 11 · Q36Show mark scheme →
AV1 = V2 + V4
BV1 = V2 + V3 + V4
CV2 + V3 = V4
DV3 + V4 – V2 = 0
Mark scheme
70Oct / Nov 2019 · Paper 11 · Q37Show mark scheme →
A0.17 A
B0.25 A
C0.33 A
D1.3 A
Mark scheme
71Oct / Nov 2019 · Paper 11 · Q38Show mark scheme →
AA₂ = 1.0 A, A₃ = 0.3 A, A₄ = 0.1 A
BA₂ = 1.4 A, A₃ = 0.6 A, A₄ = 0.2 A
CA₂ = 1.8 A, A₃ = 0.9 A, A₄ = 0.3 A
DA₂ = 2.2 A, A₃ = 1.2 A, A₄ = 0.4 A
Mark scheme
72Oct / Nov 2019 · Paper 12 · Q36Show mark scheme →
AX → Y → Z
BX → Z → Y
CY → X → Z
DY → Z → X
Mark scheme
73Oct / Nov 2019 · Paper 13 · Q34Show mark scheme →
A2.7 W
B6.0 W
C11 W
D24 W
Mark scheme
74Oct / Nov 2019 · Paper 13 · Q37Show mark scheme →
AKirchhoff's first law: The sum of the currents entering a junction equals the sum of the currents leaving the junction. | physics principle applied for first law: conservation of charge | Kirchhoff's second law: The sum of the e.m.f.s around any closed loop in a circuit equals the sum of the p.d.s around the same loop. | physics principle applied for second law: conservation of energy
BKirchhoff's first law: The sum of the currents entering a junction equals the sum of the currents leaving the junction. | physics principle applied for first law: conservation of energy | Kirchhoff's second law: The sum of the e.m.f.s around any closed loop in a circuit equals the sum of the p.d.s around the same loop. | physics principle applied for second law: conservation of charge
CKirchhoff's first law: The sum of the e.m.f.s around any closed loop in a circuit equals the sum of the p.d.s around the same loop. | physics principle applied for first law: conservation of energy | Kirchhoff's second law: The sum of the currents entering a junction equals the sum of the currents leaving the junction. | physics principle applied for second law: conservation of charge
DKirchhoff's first law: The sum of the e.m.f.s around any closed loop in a circuit equals the sum of the p.d.s around the same loop. | physics principle applied for first law: conservation of charge | Kirchhoff's second law: The sum of the currents entering a junction equals the sum of the currents leaving the junction. | physics principle applied for second law: conservation of energy
Mark scheme
75Oct / Nov 2019 · Paper 13 · Q38Show mark scheme →
AV3 = 1.5 V, V4 = 1.0 V
BV3 = 3.0 V, V4 = 2.0 V
CV3 = 4.5 V, V4 = 3.0 V
DV3 = 6.0 V, V4 = 4.0 V
Mark scheme
76May / June 2019 · Paper 11 · Q37Show mark scheme →
A0.10 A
B0.15 A
C0.20 A
D0.30 A
Mark scheme
77May / June 2019 · Paper 12 · Q36Show mark scheme →
Acharge
Benergy
Cmass
Dmomentum
Mark scheme
78May / June 2019 · Paper 13 · Q36Show mark scheme →
AAll three lamps light with normal brightness.
BOnly lamp 2 lights with normal brightness.
COnly lamps 1 and 3 light with normal brightness.
DNone of the lamps light with normal brightness.
Mark scheme
79May / June 2019 · Paper 13 · Q38Show mark scheme →
A0.10 A
B0.20 A
C0.30 A
D0.47 A
Mark scheme
80Feb / March 2019 · Paper 12 · Q37Show mark scheme →
AP → S → Q → R
BP → S → R → Q
CQ → R → S → P
DS → P → Q → R
Mark scheme
81Oct / Nov 2018 · Paper 11 · Q37Show mark scheme →
A4.4 V
B4.6 V
C6.6 V
D11.2 V
Mark scheme
82Oct / Nov 2018 · Paper 12 · Q36Show mark scheme →
Alargest current: PQ; smallest current: PR
Blargest current: PQ; smallest current: QS
Clargest current: RS; smallest current: PR
Dlargest current: RS; smallest current: QS
Mark scheme
83Oct / Nov 2018 · Paper 12 · Q37Show mark scheme →
AThe charge flowing in an electric circuit is conserved.
BThe energy in an electric circuit is conserved.
CThe sum of the electric currents entering a point in an electrical circuit is equal to the sum of the electric currents leaving that point.
DThe sum of the potential differences in a circuit is equal to the sum of the products of the current and resistance.
Mark scheme
84Oct / Nov 2018 · Paper 13 · Q33Show mark scheme →
A24 V
B30 V
C40 V
D60 V
Mark scheme
85Oct / Nov 2018 · Paper 13 · Q36Show mark scheme →
AW → Z → Y → X
BX → W → Y → Z
CX → Y → W → Z
DX → Y → Z → W
Mark scheme
86May / June 2018 · Paper 11 · Q33Show mark scheme →
AThis is Kirchhoff's first law, which results from the conservation of charge.
BThis is Kirchhoff's first law, which results from the conservation of energy.
CThis is Kirchhoff's second law, which results from the conservation of charge.
DThis is Kirchhoff's second law, which results from the conservation of energy.
Mark scheme
87May / June 2018 · Paper 11 · Q34Show mark scheme →
A$I_1 = -5.5\,\text{A}$, $I_2 = 1.0\,\text{A}$, $I_3 = 6.5\,\text{A}$
B$I_1 = 0.5\,\text{A}$, $I_2 = 4.0\,\text{A}$, $I_3 = 3.5\,\text{A}$
C$I_1 = 3.5\,\text{A}$, $I_2 = 4.0\,\text{A}$, $I_3 = 0.5\,\text{A}$
D$I_1 = 6.5\,\text{A}$, $I_2 = 1.0\,\text{A}$, $I_3 = -5.5\,\text{A}$
Mark scheme
88May / June 2018 · Paper 11 · Q35Show mark scheme →
A0.25 mA
B0.50 mA
C0.75 mA
D1.0 mA
Mark scheme
89May / June 2018 · Paper 12 · Q34Show mark scheme →
A0.21 A
B0.50 A
C0.75 A
D1.0 A
Mark scheme
90May / June 2018 · Paper 12 · Q36Show mark scheme →
ACircuit A
BCircuit B
CCircuit C
DCircuit D
Mark scheme
91May / June 2018 · Paper 13 · Q34Show mark scheme →
ACircuit A: 6.0 V battery connected to one 6.0 Ω resistor in series with a parallel combination of two 6.0 Ω resistors.
BCircuit B: 6.0 V battery connected to three 6.0 Ω resistors in series.
CCircuit C: 6.0 V battery connected to a parallel combination of two 6.0 Ω resistors in series with a third 6.0 Ω resistor.
DCircuit D: 6.0 V battery connected to three 6.0 Ω resistors in parallel.
Mark scheme
92May / June 2018 · Paper 13 · Q35Show mark scheme →
A0.30 Ω
B0.53 Ω
C1.9 Ω
D3.3 Ω
Mark scheme
93May / June 2018 · Paper 13 · Q36Show mark scheme →
Adecrease, decrease
Bdecrease, increase
Cincrease, decrease
Dincrease, increase
Mark scheme
94Feb / March 2018 · Paper 12 · Q38Show mark scheme →
A0.25 Ω
B0.61 Ω
C4.0 Ω
D16 Ω
Mark scheme
95Oct / Nov 2017 · Paper 11 · Q36Show mark scheme →
AI decreases, V decreases
BI increases, V increases
CI increases, V stays the same
DI stays the same, V increases
Mark scheme
96Oct / Nov 2017 · Paper 11 · Q37Show mark scheme →
AI1R1 + I2R2 = I3R3 + I3R4
BI2R2 – I3R4 – I3R3 = 0
CE = I1R1 + I2R2 + I3R3 + I3R4
DE = I1R1 + I2R2 – I3R3 – I3R4
Mark scheme
97Oct / Nov 2017 · Paper 12 · Q34Show mark scheme →
Apower loss in R$_1$ = power loss in R$_2$ + power loss in R$_3$
Bpower loss in R$_2$ = power loss in R$_3$
Cpower output of cell = power loss in R$_1$ + power loss in R$_2$ + power loss in R$_3$
Dpower output of cell = power loss in R$_1$
Mark scheme
98Oct / Nov 2017 · Paper 12 · Q37Show mark scheme →
A3.0 Ω
B4.0 Ω
C4.8 Ω
D5.0 Ω
Mark scheme
99Oct / Nov 2017 · Paper 13 · Q37Show mark scheme →
A0
B\frac{E}{3}
C\frac{2E}{3}
DE
Mark scheme
100Oct / Nov 2017 · Paper 13 · Q38Show mark scheme →
A1 Ω and 2 Ω in series with ammeter between P and Q
B1 Ω and 2 Ω in parallel with ammeter between P and Q
C1 Ω in series with ammeter, in parallel with 2 Ω between P and Q
D1 Ω and 2 Ω in parallel with ammeter in the middle branch between P and Q
Mark scheme
101May / June 2017 · Paper 11 · Q37Show mark scheme →
A1 Ω in series with a parallel combination of 2 Ω and 3 Ω
B2 Ω in series with a parallel combination of 1 Ω and 3 Ω
C1 Ω and 2 Ω in series, in parallel with 3 Ω
D1 Ω, 2 Ω and 3 Ω in parallel
Mark scheme
102May / June 2017 · Paper 12 · Q36Show mark scheme →
AP and Q
BQ and S
CR and S
DS and P
Mark scheme
103May / June 2017 · Paper 13 · Q35Show mark scheme →
Apotential drop across M / V: 9; potential drop across P / V: 7; potential drop across Q / V: 13
Bpotential drop across M / V: 13; potential drop across P / V: 7; potential drop across Q / V: 13
Cpotential drop across M / V: 13; potential drop across P / V: 11; potential drop across Q / V: 9
Dpotential drop across M / V: 17; potential drop across P / V: 3; potential drop across Q / V: 17
Mark scheme
104Feb / March 2017 · Paper 12 · Q36Show mark scheme →
A11 kΩ
B18 kΩ
C22 kΩ
D36 kΩ
Mark scheme
105Oct / Nov 2016 · Paper 11 · Q37Show mark scheme →
AI1 = I2 + I3
BI2 = I1 + I3
CI3 = I4 + I5
DI4 = I5 + I3
Mark scheme
106Oct / Nov 2016 · Paper 12 · Q37Show mark scheme →
AI / A: 3.0; V / V: 10.5
BI / A: 4.0; V / V: 9.0
CI / A: 4.0; V / V: 12
DI / A: 12; V / V: 18
Mark scheme
107Oct / Nov 2016 · Paper 13 · Q37Show mark scheme →
AI1 = I2 + I3
BI2 = I1 + I3
CI3 = I4 + I5
DI4 = I5 + I3
Mark scheme
108May / June 2016 · Paper 11 · Q35Show mark scheme →
A2 V, 4 V
B2 V, 10 V
C3 V, 4 V
D3 V, 10 V
Mark scheme
109May / June 2016 · Paper 11 · Q36Show mark scheme →
AR1 + R2
B\frac{R_1 R_2}{R_1 + R_2}
C\frac{R_1 + R_2}{R_1 R_2}
D\frac{R_1}{R_2}
Mark scheme
110May / June 2016 · Paper 13 · Q35Show mark scheme →
Adecreases / decreases
Bdecreases / increases
Cincreases / decreases
Dincreases / increases
Mark scheme
111Feb / March 2016 · Paper 12 · Q34Show mark scheme →
A$V_1 + V_2 + V_3 = I(R_1 + R_2 + R_3)$
B$V_1 + V_2 - V_3 = I(R_1 + R_2 + R_3)$
C$V_1 - V_2 + V_3 = I(R_1 + R_2 + R_3)$
D$V_1 - V_2 - V_3 = I(R_1 + R_2 + R_3)$
Mark scheme
112Feb / March 2016 · Paper 12 · Q35Show mark scheme →
A$2.7\,\Omega$
B$4.0\,\Omega$
C$5.3\,\Omega$
D$12\,\Omega$
Mark scheme
113Feb / March 2016 · Paper 12 · Q36Show mark scheme →
Athe conservation of charge
Bthe direction of the flow of charge is from negative to positive
Cthe potential difference across each resistor is the same
Dthe current varies in each resistor, in proportion to the resistor value
Mark scheme